To install:

Copy to C:\Program Files (x86)\Steam\userdata\ 156601698\219990\remote\save\main (You will have other numbers)

For non-Steam versions (pirated) or GOG copy to C:\Users\User name\OneDrive\Documents\My Games\Grim Dawn\save\main

After copying save go into the game and in the game settings and disable the cloud storage function.

Author: sademus